Microsoft have yet to confirm SP1 has hit RTM so there are no details for the Release to Web (RTW) plan. The details of the supposed final RTM build are:
Size: 563,934,504 bytes
Size: 947,070,088 bytes
The first wave will have support for 36 languages: Arabic, Bulgarian, Chinese-Hong Kong SAR, Chinese-Simplified, Chinese-Taiwan, Croatian, Czech, Danish, Dutch, English, Estonian, Finnish, French, German, Greek, Hebrew, Hungarian, Italian, Japanese, Korean, Latvian, Lithuanian, Norwegian, Polish, Portuguese-Brazil, Portuguese-Portugal, Romanian, Russian, Serbian, Slovak, Slovenian, Spanish, Swedish, Thai, Turkish, and Ukrainian.