They have to take their time fixing as many bugs as they can. If it's not fixed adequately Ubi's reputation is on the line.... not that they have a good one anymore. SH4 not fixed the way it should be will kill sales in the future. I won't buy another Ubi game no matter what it is, and I imagine there are many out there that feel the same way. Hopefully they'll get it right in 1.3 to save face and keep customers.
And when will 1.3 be out? You can bet it won't be 2 weeks or even 6 weeks this time around.