Matt,
The State Tournament Calender is available at http://www.tenpin.org.au/2008_Calendar_TAS.aspx and it shows no more events planned for remainder of 2008.
This excludes any tournaments that individual bowling centres may promote themselves, but I do not know of any myself.
The tournament calender for 2009 will not be finalised until after the Tenpin Bowling Tasmania AGM in Devonport on Dec 7th 2008.
Cheers.