Can someone tell me if SD3 is available in PAL version?
Where would I get one?

Also, if any info on upcoming SD5: is this a real thing? All I heard on this camera was just a speculation and nothing has been confirmed by Panasonic yet.

As far as I know, the SD3 is only available in the Japanese (29.97 FPS) version. The SD5 is still rumors (albeit from reliable sources). However, Panasonic is holding a press conference on July 17 in New York and is requiring non-disclosure agreements from the participants. I suspect there will be more information forthcoming around that time as I have yet to see one of these NDAs not be subverted...usually hours before the actual press conference and from a Japanese or European source. The likelihood of it leaking goes up if they actually show something exciting.