I was saying so, because I understood the latest iRacing News that way. Here is the original text from the iRacing site:
"Certainly the week of October 23-29 promises to be lucky for iRacers looking to move-up the license ladder in time for 2012 Season 4. Everyone from Rookie to Class B can boost their ratings in the Week 13 Street Stock Challenge (ovals) and SpecRacer Ford Challenge (road) series. The Street Stock Challenge features the JR Motorsports Street Stock car at Thompson, South Boston, Lanier, Charlotte (both the Legends and the 1.5 mile speedway), Oxford Plains and USA International. Road racers can try to nab a higher license in the SRF at Okayama (long and short), Charlotte (road), Laguna Seca, Summit Point Jefferson Reverse (aka nosreffeJ) - and Lime Rock.
Both are official series, with Safety Ratings and iRatings in effect, so competitors have a one last chance to increase their license ratings before the official license promotions for Season 4 are finalized at weeks end. Likewise, rookies who have yet to complete the category-specific minimum participation requirements for graduation to a D license (two official races or four time trials in each category) can do so in Week 13."
I highlighted the parts, which let me assume that I can fulfill my MPR to move from D class to C class during week 13.