Oval has started a fan mailing list called Circle, plus a Bandcamp page where Japanese versions of six rare releases from the late 1990s and early 00s are available for free download. The six releases are: Szenario, Dok, Aero Deko, Ovalprocess, Ovalcommers and Pre/Commers. The latter three include the bonus tracks originally exclusive to the Japanese editions, and Popp is also selling his final few copies of the (almost) out of print titles.
Fans on the Circle mailing list will get an exclusive track once a month, and a collector's only album once a year, starting 24 June. More on Oval's Bandcamp here.