the D3 is coming out in the next few months. the initial leaked/rumored specs are: 4" screen (increased from current 3.7"), dual core, more ram, and improved keyboard (the increased screen size, alone, would allow for a better pkb) - essentially the same/similar specs to the Bionic, but with a pkb. no word/rumor yet on whether it will be LTE. it was initially thought that it might release in Q2, but now the general thought is that it will be released in the summer as a competitor to the iP5. if that is what it is designed to compete against, i would hope it would be LTE. on the other hand, i don't see Moto releasing a direct competitor to its own Bionic so soon.
there has also been rumors floating around for several months of a new Moto phone code named Solana. it is also rumored to have a pkb. whether the Solana is still in the works or not is unknown - i haven't seen any more rumors about it in a while.