I've learned today that I was not alone in my disappointment. It looks like Boroda, the hacker who was largely responsible for the hacks which converted theT1 into an Android tablet, is about as unimpressed with the T2 as I am. At this point he doesn't plan to buy one to hack it; He thinks it is basically the same device, only more expensive, and that it's not worth the money.
I cannot blame him. The T2 is selling for $129 in the US, or the same price as the Kobo Glo. And the Kindle Paperwhite is only $10 more (or $10 less, if you don't mind the ads). True, neither of the better ereaders are available yet, but given the improvements in screen, touchscreen, and frontlight, I think they're worth waiting for.
It's a pity Sony didn't learn from the last ereader and the enthusiasm towards hacking it. I really wish they had released a straight Android device with an E-ink screen instead of a closed ereader. That would have been worth the disappointing hardware.