For those interested the link is https://getpebble.com/#/tdtMMf:5gV
As for what they'll announce I'm at the very least interested if only to see where they will take this. After reading an article from a while back on the verge (Pebble has now sold over 1 million smartwatches | The Verge) it looks like it could be a new product but more likely they'll announce their new software, which if it supports WP or even Windows 10 would be a pretty big win for the platform.
I really hope that there also will be a huge software update. Hopefully getting full compatibility with WP(at least when W10 comes out). If not I have to get an overpriced Microsoft Band at eBay.