Update: Shin-en2 and ARTSAT2-DESPATCH has been postponed again. JAXA announcing; Launch date Shin-en2 and ARTSAT2-DESPATCH has been postponed again in December 3 04:22:04 UTC. Soon, there will be a press release.

Update: New launch information, H-IIA F26 Hayabusa2 Launch Asteroid Explorer “Hayabusa2” Launch Live Broadcast 03:30UTC- Dec. 1. Live

Launch Postponement of H-IIA Launch Vehicle No. 26 with Hayabusa2 Onboard

The launch of the H-IIA Launch Vehicle No. 26 (H-IIA F26) with the Asteroid Explorer “Hayabusa2” onboard has been rescheduled as clouds including a freezing layer (please refer to the following figure) that exceeds the restrictions for suitable weather are forecast to be generated at around the scheduled launch time on November 30 (Sun.), 2014 (Japan Standard Time.)
The new launch day will be no earlier than December 1 (Mon.), 2014 (JST).

The new launch day and time will be announced as soon as it is determined after carefully examining the weather conditions.

Official pres release.