Samsung has announced its next device in the Galaxy S line - the Samsung Galaxy S3. The company is sending out e-mail invites for the device's launch in London, on May 3.

The invites say to "come and meet the next Galaxy." Samsung previously delayed launching the device at Mobile World Congress in February.

While the invites don't officially state the Galaxy S3 is the upcoming phone, the company is unlikely to have any other Galaxy products launching during the period.

HTC recently launched its One phones, with the One X the high-end device in the trio with a 4.7-inch screen. Samsung will probably be looking to set the bar again come May.

The image doesn't hint towards potential specs; the Galaxy Note features a stylus, so Samsung could be looking to incorporate that technology. Also, the blue drops on the invitation are brushed metal. Could that mean we'll be seeing an aluminum case on the S3, rather than plastic?

The event is being held at the London Earls Court Exhibition Centre, and a livestream will be on Samsung's Facebook page.

It's expected the device will launch with Android 4.0 Ice Cream Sandwich, along with Samsung's TouchWiz UI. Rumors have suggested the device will launch with a quad-core CPU, 32GB of internal storage, improved cameras and 4G support along with 2GB of RAM and a 12-megapixel camera. Though while those specs are strong on paper, optimizing software is equally important.

We had reported earlier that LG had criticised Samsung for its non-HD screen, so it's possible Samsung will look to improve that. Competitors are launching with 1280x720 screens, so it wouldn't be surprising if Samsung went that way.

Other rumors claim the device will launch with a 4.6-inch screen, so a high resolution screen would be needed to maintain image quality.

Leaked images have also suggested the device will include a physical home button, and a larger screen. So there could be five rows of icons.

Mark Saadi, principal analyst at Informa Telecoms & Media, said Samsung will have the advantage over other Android devices because the company manufacturers displays and memory in-house.

(reported by Jonathan Charles, edited by Dave Clark)