A new producer's letter is online. Here is a quick snip...

"In those same updates, brand new item rewards will be added for soloists and small-groupers. Some of the rewards that have been reserved solely for groups will also make their way, though more rarely, to the solo and small group encounters in the world. At the same time, expect group rewards to improve as well. The chances for some of the group-only ultra-rare drops will be increased.

In the weeks following that, expect new dungeon instances to be made available for those who solo, duo, and trio. Exciting dungeon crawling is a core part of what people love the most about online games, and it shouldn't be reserved solely for those who choose to play in full groups."