The packs are still being updated yes. The curse launcher is still beta so I still think there is some time before the FTB launcher is done. The FTB launcher runs off of curse anyway.That can't be right. They just updated FTB Infinity yesterday!
"For those wondering, the FTB Launcher will continue to be updated and maintained for the foreseeable future. Once feature parity between the Curse Client and the FTB Launcher has been met, we will then begin the process of retiring our launcher. At the moment, we do not have an exact timeframe on when this will occur." quote from the news feed