Treasury Direct announced that they are dropping the Savings Bond purchase limit from $30K/year to $5K/year.  This limit applies separately to paper and electronic Savings Bonds and to each social security number, so a couple could purchase up to $20K total (each of them $5K of paper and $5K of electronic).

I’m guessing they were seeing a small segment pushing the maximum in and out of the bonds trying to arbitrage interest rates. The new limits will make the incentive for gaming the system go away for most of them.