How many shows can the master Whole Home DVR record at once?

Mine can record 2 at once right now (like the old DVRs). I went into the Cox store to return it, but the onsite person said they will be updating the software so that 4 shows can be recorded at once. Is that true?

Also, she said that the slave unit will be able to pause live TV. They tried an update in January, but it didn't work, and expect it will be rolled out very soon.