While searching the European trademark database, we discovered Nintendo registered the rights to WiiRelax in PAL territories. Since the Vitality Sensor is a pulse detecting accessory, it sounds like WiiRelax would work with the upcoming device.
Prior to this trademark, Pub Company, an video developer in Italy, also mentioned a game called Wii Relax (note the space). The title was officially announced on April 1 and hasn’t been mentioned since. Their website for Wii Relax is gone too so Pub Company’s “zen experience” project may have been canceled, blocked, or perhaps purchased by Nintendo.