In order for the high limit to get on the credit bureau, I believe it needs to be "reported" as such meaning that it has to stay on there long enough to be a part of the report that month to the Big 3 from CO.
I would NOT do this now since they ARE going to be finally reporting the true limits at the end of this year/beginning of next because when someone reviews your credit report it will look as though at one time you MAXED out to your limit then.
I am a landlord and I analyze credit reports instead of relying on scores. In fact I never even got scores until last year (been doing this for 30 years). I look for trends (past and present) and tendencies including maxing out cards (not just if they are right then but if they have been maxed out in the past, etc.). It often takes scores a long time to "catch up" with current trends whether they be good or bad. Sometimes scores are bad when there really is little or no negative info on the reports...sometimes just due to someone having a very short credit history record, etc. Or they might have just two cards with very low balances (say $200 each) and one card has $75 on it.
Scores are helpful indeed but unlike mortgage companies I tend to look past them for the "real" info. Usually that is more helpful to my applicants. I wish I had paid attention to all of the Capital One "issues" before as I'm sure some of my applicants over the years have ONLY had one card which was a Capital One...so utilization was likely reported much "worse" that reality.
I am glad they are FINALLY fixing this..let's just hope they really do without screwing up anything!