In reply to leemagowan:
The 2007 guide had both trad and sports routes (and some of the trad routes had the odd bolt in). Many of the trad routes have been retrobolted with permission (and written up as a sports climb only route list in the 2013 guide), but not all, so if you are on a trad mission ideally you would need both guides to workout what's left (and some of these have probably been bolted since 2013!)
Havent been trad climbing since our first trip 5 years ago as the sports routes are so good (sea cliffs especially if you want a bit more of a 'trad' adventure) but noticed last week the odd trad routes we have done still remain.
The climbing clubs on malta are very friendly if you wanted try them for some route recommendations through face book .
Have a good trip hope you find some of what you are after. If you are on the trad a bent coat hanger or abalakov threader is very useful for threading slings and take some cord. In-situ gear/cord often haven't been replaced so treat with great caution.
Rich