2013 availibility for AMOS is correct, the Finnish Defence Forces' official site
here (in Finnish) (Google translation in English) confirms operational status in 2013.
Other suggestions, Ruotuväki, the official newpaper of the FDF
(here, .pdf in Finnish, page 5) mentions that Valmet Redigo liaison aircrafts (unit 543 in Finnish obat, used as an air OP aircraft) are to be retired by the end of 2013. They have been replaced by Pilatus PC-12 NG which are already operational from late summer/early autumn of 2010 (8/2010?).
Also, can anyone confirm that FDF has really bought/is going to buy STRIX ammunition for AMOS as I can't find any source for this.