Logos Bible Software has just started a Facebook comment thread here to invite questions about the new SBL Greek New Testament edition that Michael Holmes announced on the ETC blog recently (don't forget to read the comments). A few days later, Stephen Carlson shared his initial impression of the edition here. And of course Rick Brannan working for Logos shared his thoughts.
Now you have the chance of discussing it again with Mike. He will be watching the Facebook thread for questions all week and post detailed replies on Tuesday the 16th at 10 a.m. PT. So go ahead and post your questions, to make sure that there is room and time for Mike to give thorough replies (I hope Mike has done all his SBL preparations...)