"We do have one planned, and it will be for quite a few levels which will allow you play for quite a bit longer. We also have a plan for Q1."
"With Borderlands 1 we had to go by forum posts, and by checking out the number times certain achievements had been unlocked to really get an idea of where players were. But SHiFT allows us to see a lot more about the way players are playing the game, and see what they’re doing. We wanted to give people enough time to get at least one level 50 in there, and then see from there, how many people are doing this. Is this a good time for this? We also didn’t want to wait so long that people were no longer interested, or felt like it wasn’t coming."
"With Borderlands 1 we had to go by forum posts, and by checking out the number times certain achievements had been unlocked to really get an idea of where players were. But SHiFT allows us to see a lot more about the way players are playing the game, and see what they’re doing. We wanted to give people enough time to get at least one level 50 in there, and then see from there, how many people are doing this. Is this a good time for this? We also didn’t want to wait so long that people were no longer interested, or felt like it wasn’t coming."
There are also some rumors that they might possibly add in a third play through option. There are also other rumors that there might be a second season of DLC on the horizon after the first season concludes. These two, however, are firmly planted in the rumor-verse until otherwise announced.
Now, it would be fantastic if that mention of "Q1" is for the level cap increase. If so, it may arrive at any point between now and the end of March, so keep those fingers crossed!
(via OPM)