have combed through the Annual report (just released) have found...

have combed through the Annual report (just released) have found two relevant comments to your question (Archstanton):

As previously advised, in May 2012, the Tatts Group began accepting online orders from NSW customers bringing NSW into line with other states. The resultant expected reduction in TTV through the New South Wales Lotteries co-branded website has been more than offset by 38% growth through the ozlotteries.com website leading to the 8.6% increase in overall TTV.

and:

In December 2008, the Company signed a five year co-branded website contract with New South Wales Lotteries (now owned by the Tatts Group) to handle lottery sales for customers from www.nswlotteries. com.au. In May 2012, the Tatts Group began accepting online orders from these NSW customers bringing NSW into line with the other states. As previously advised, this will have the effect of reducing revenue from the co-branded website although growth of NSW customers for www.ozlotteries.com is still expected to continue through ongoing marketing initiatives. The Company will seek a further term when this contract expires which will be considered on reasonable commercial grounds and may or may not be granted.

this could go 3 ways:
1: NSW goes exclusively to Tatts (like QLD) at end of year
2: NSW deal is extended ongoing (but on 30 day notice, as currently in VIC)
3: Tatts signs new long term agreement, for NSW, or for both VIC + NSW

I personally think that option 2 is most likely, but who knows?