Nexus S 4G Maintenance Pack Released?

[Srycantthnkof1]

Google Nexus S 4G maintenance release packs "enhancements to improve performance" - Phone Arena

Has anyone got this yet? Has anyone seen any differences?

 

[kalex]

I got it on sunday when i turned my phone on. not sure what it updated though

 

[tailsthecat3]

i got one on sunday...didnt really notice the sw version. i returned it today(monday) and the model was grj22 out of the box. still sealed in the plastic.