Since I know Ric Ford from MacInTouch reads this blog for updates (hi Ric!), let me also be clear that 38.9 is an interim stopgap release only -- the plan is still to get TenFourFox to version 45, hopefully by 45.4. There will also likely be a 38.10 (security parity with official Firefox ESR 45.3) to allow 45 enough time to bake in beta and the localizers to catch up, but I'm determined to get us there ultimately with more information on my plans to come. 38.9 and 38.10 are TenFourFox-specific updates to Firefox 38ESR and do not correspond to any official version of Firefox.
38.9 will become live on Monday evening Pacific as usual, assuming no showstoppers.