As things stand at the moment, I will be writing 3 Tales of the TMNT comics in 2009. All three are already in production, one of which (actually two of which) I have been teasing here. At the moment, the three stories are tentatively titled "Expose`", "Them Again", and "Scarred". The last title is likely to change though.
All can be read on their own, all link in to Tales #36, and one will be loosely linked to #50 (which will in turn, link #50 to #36).
I know for sure that Paul (Harmon) is going to be tackling two of these stories once we finish up #50.