Sony Mobile UK has just sent out an invite for an event in London on June 25, where it promises that we'll "see the next breakthrough in the Sony design story".

The invite continues: "join us as we unveil the newest addition to the Xperia range. Discover our unique approach to design as we share our focus for 2013 and beyond."

It's thought that there's a phablet in the offing going by the name Sony Xperia ZU, although early rumours noted it as the Sony Togari.

Germany and France have already received separate invites for local events on June 25 and July 4 respectively, so it's no surprise the UK is getting in on the action.

What's that coming over the hill?

Rumours suggest the Xperia ZU will sport a monster 6.44-inch full HD display and 2.3GHz quad-core processor which would seriously set it apart from the likes of the Samsung Galaxy Note 2, Huawei Ascend Mate and ZTE Grand Memo.

In terms of a potential Xperia ZU release date and price, well we're still in the dark as Sony hasn't even announced it yet, but we'd expect it to hit shelves in the next month or two.

TechRadar will be at the event to bring you all the details on what Sony has to offer, including any potentially oversized smartphone.

It looks like the HTC Butterfly is about to become very real, and some leaked candid snaps show the new specimen giving the camera an early teaser.

The dimensions of the new handset appear to be then same as the original Butterfly, however the speaker on the rear has become stereo speakers on the front.

HTC's BoomSound feature, as it's known, first appeared on the HTC One, and later on the Desire 600. The leak appears to show that the phone is keeping the 5-inch 1080p display, and that Sense 5 will also be showing itself again.

Butter me up

It was VR-Zone that spotted the new handset. We don't know many other specifics of the device, though it's rumoured to be running on a Qualcomm Snapdragon 600 processor.

The camera is expected to use the One's UltraPixel technology too, but there's nothing in the pictures to tell us if this is a sure thing.

We expect to hear the official word on the Butterfly S from HTC on June 19, when the Taiwanese company is holding a special media event, so hold tight.

Phone manufacturers love a good Android overlay, just take a look at Sense 5.0 on the HTC One, TouchWiz on the Samsung Galaxy S4 or even the Emotion 1.5 UI on the Huawei Ascend P2 - they just can't let Google's creation be - but that's not the case over at Acer.

The Taiwanese firm spoke to TechRadar and explained that it would rather not get tied up in the whole Android UI business and instead focus on enhancing some core aspects.

"We found from our previous experiences of creating Android UIs that they are very difficult to maintain, especially keeping track with Google's migrations," explained S T Liew, the President of Acer's global smartphone division.

"Android actually does a great job at serving up the right user experience and it allows people to migrate from one Android phone to another with relative ease.

"With each phone we assess its main features and we enhance those experiences with small UIs, such as the camera app or the note taking capabilities and multi-tasking tools on the Acer Liquid S1."

Easy to do, lots to gain

For Acer this approach makes business sense too, as the various enhancements generally don't require too much input for a decent return.

"We don't have to rewrite Android," said Allen Burnes, Acer's VP of Smartphones for EMEA, "the overhead we put into that is relatively low, but the consumer benefit is very high.

"People know Android, they like it, and we don't want to try and change their behaviour."

The Android overlay debate will probably always divide people, but we're not surprised that some manufacturers are looking at toning down their involvement in the software.

Nokia will halt shipments of handsets bearing the self-built Symbian operating system sometime this summer, according to reports on Wednesday.

AllThingsD brings word from sources that the dying embers of the old faithful OS will be soon be extinguished and the remaining handsets will only be sold in emerging markets to deplete stockpiles.

While that might take a little while, there's still a demand for some of the low cost handsets in some parts of the world, where Nokia does good business.

The decision will bring to an end a slow painful death for the OS, which has been considered hugely dated by most observers (barring a section of hardcore Nokia fans) since the iOS and Android platforms took over years ago.

Fitting end

An end for Symbian would, of course, mean that Nokia's fate would be completely bound to that of Windows Phone.

The company has built some high quality handsets bearing Microsoft's mobile operating system, but sales have not reflected the critical acclaim devices like the Lumia 920 have received.

The company stopped short of confirming the reports, but did say the Nokia 808 Pureview handset, the last Symbian handset the company produced, would be a fitting end for the once-beloved system.

"We can't confirm when Symbian shipments come to an end, unfortunately," a Nokia spokesperson said.

"In general, though, regarding Symbian, the last Symbian phone we introduced was the Nokia 808 PureView, and that's fitting. This phone extended the platform's pioneering tradition, and acted as a bridge for the next wave of innovation now seen in our latest models, like the Lumia 925."

We know there's an HTC One Mini really in the works, thanks to a report from Bloomberg yesterday.

But today, Engadget claims a "trusted" source has given them an image of the HTC One Mini along with specs of the soon to be announced phone.

The image is blurry at best and possibly photoshopped, but so far this is all we have, and for now, we'll take it.

If it's the real deal, the slimmed down 4.3-inch screen version of the popular HTC One could become the next big hit.

The rest of the leak

The handset bears the similar metallic body of the HTC One and reportedly has Beats Audio branded on the back.

The Mini is running a "Sensed-up version of Android 4.2.2 Jelly Bean" with Blinkfeed built and boasts a 1.4GHz dual-core, which may just be Snapdragon 400 from Qualcomm -similar to the less popular HTC First.

No word on when the UltraPixel camera was leaked, but the source claims the rear camera can shoot full HD video with Zoe share capture.

Of course, until the actual HTC One Mini is announced this all could very well be speculation. Though if true, these specs might change before its release later this summer.

• Will the HTC One be coming to Verizon?