The band have completed work on the follow-up to their 2008 album 'Black Ice'
Singer posted message to his car racing website
Band vow to continue without founder member
"We are definitely getting together in May in Vancouver," says frontman
However, conflicting reports claim retirement rumours could be "exaggerated"
An anonymous source says one member is 'quite ill'
Rock frontman joins The Piano Man at his Madison Square Garden residency gig (March 21)
The rock legends will be heading to a Vancouver studio in May to record
The campaign has attracted over 100,000 likes in four days
Band want late singer be honoured with a statue in Kirriemuir, Scotland