The cat is truly out of the bag, but I am still under an embargo so I can't tell you everything.
The Kobo Clara HD is a new 6" ereader with a touchscreen and color-changing frontlight on top of 300 PPI Carta E-ink screen. Weighing in at 166 grams, the Clara HD measures 8.4 mm thin. Under the hood you will find 8GB of storage, Wifi, and a 1.5Ah battery, but you will not find BT or a card slot.
All in all, the specs suggest that this is a nice upgrade to Kobo's existing 6" ereader, but it doesn't wow me - mostly because I don't care for the Clara HD's stand out feature, its color-changing frontlight.
If you do like it and have been wanting to get the new frontlight on a pocketable ereader then you are going to be very happy in just a few weeks.
The Clara HD will sell for $129 USD or 129 euros. It ships in Italy on 5 June; my embargo ends a few days short of that.