I just found a listing on SLG Publishing's site, that indicates the second issue of TRON: Ghost In The Machine won't be coming out until July. Which is somewhat of a surprise, to me. It's a bit early to say with certainty: but this seems to indicate the comic will be bi-monthly. At six issues, that means it would take a year for all the issues to come out.

The listing on the SLG site also has what seems to be a preview for the cover of the second issue, seen on the left.

April 26th UPDATE: Landry (one of the writers) answered my question about the schedule of the comic, HERE. He said there isn't any fixed schedule as to when the issues will be coming out. But apparently there will be a 2-3 month wait, between them.