Mew have not confirmed any of these dates (yet?), but Last.fm is fairly certain that the Danes will support Nine Inch Nails with or without Jane’s Addiction at least in The Netherlands and UK the following July.
Apparently Mew will play in Amsterdam on July 8th, Manchester on July 14th and London on July 15th. This would make sense, because Mew have been recently confirmed to Latitude Festival in UK on July 17th. The London-show is also mentioned by the O2 Arena’s official website, but none of these are announced by Nine Inch Nail’s tour site. Rumour has it that this will be the last proper tour for NIN.
It is also rumoured that Mew might play in Bandung, Indonesia (on August 4th) before the previously announced shows in Tokyo and Osaka (on August 7th & 8th). Apparently this is an Indonesian forum rumour which may or may not be trustworthy. Only time will show.