This special is not listed at the bank's website. It has been advertised in the Dallas Morning News. The ad is available online here.
Not only is 5% a competitive money market rate for brick-and-mortar banks, but the guarantee of 5% through the first half of next year might be particularly useful if the Fed starts lowering rates in the coming months. The bank is very new so they don't have any info on their website about fees that could make this deal less attractive.
The bank is located in Richardson, TX at 955 E. Campbell Rd., Ste. 500. Phone number is 469-385-2800. The bank was just established in June. It is FDIC insured (FDIC Certificate # 58567).