Engadget has got its paws on a "private note sent from Sony's marketing group" which states that Sony's Android tablets, the S1 and the S2, will be hitting European shops at the end of September with a pre-order period opening up in August.

Well, we say tablets; the memo only seems to state that one of the tablets will go on sale at this time - one with "unique design features".

And when you're dealing with two tablets that both stray far from the traditional tablet design path (one has a curvy back and one is a clamshell) then it's difficult to tell which one. However, when Sony went official with the tablets back in April, it stated an "Autumn 2011" launch, so we wouldn't be surprised to see them both land.

John Lewis and one other is going to have first dibs on the tabs, with other retailers getting in on the action after Christmas.

In case you missed the original news, they are both Honeycomb devices. The S1 has a 9.4-inch display, works as a universal remote control for your television and allows you to throw personal content to TVs and music to wireless speakers via DLNA.

The S2 will feature dual 5.5-inch displays and come with the same throwing capabilities but is designed to be more portable. It comes with front and rear facing cameras and packs a Tegra 2 chip to handle the graphics.