The real answer to when Texas' executions start up won't be decided by Texas' highest criminal court. Instead, one of two things will happen: 1) The Supremes will approve LI next year in its current form, in which case Texas will restart immediately, or 2) the Supremes will require changes to or abolition of LI, in which case the Texas Legislature must approve a new execution method in 2009.
If it's the latter, and that legislation passes with a 2/3 majority, the next Texecution conceivably could happen as early as April or May 2009. More likely, executions could resume September 1, 2009. Given the Texas political climate, such legislation's passage in some form would be inevitable. That's why IMO the most likely guess (should you decide to start a pool) as to the date of the next Texecution is September 1, 2009.
Texas executed 26 people in 2007; no other state executed more than three over the same period. What do you think: When will Texas' next execution take place, and will Texas be the first state to execute another condemned man? A subset of that question, I suppose, then, must be how do you think the US Supreme Court will decide on Baze?UPDATE: In the comments, Shannon Edmonds from the DAs Association says he thinks TDCJ could change the cocktail themselves unless SCOTUS bans lethal injection entirely. He writes:
Even if SCOTUS takes issue with the current "cocktail" used in lethal injections, I don't think it will take legislative action to come up with a new method in Texas. Code of Crim. Proc. Art. 43.14 leaves it up to TDCJ to determine how to do it ("... by intravenous injection of a substance or substances in a lethal quantity sufficient to cause death ..."), so that process could be changed immediately after receiving some guidance from SCOTUS. Whether or not that would have to go through the administrative rulemaking process is unclear to me (mainly b/c I'm too lazy to research something so speculative), although a California court recently rejected that state's new lethal injection procedure b/c the Cali prison system did not use their prescribed administrative rulemeking procedure.
Legislative action should only be necessary if SCOTUS completely invalidates all lethal injections, and I don't think that issue is even on the table for them (contrary to many abolitionists' fervent wishes).