Unfortunately, I can't tell much from the thumbnail images posted on Tiger im Focus.
The delivery chart for the 505th on page 262 of Tigers in Combat is accurate down to the date of delivery and doesn't show any more new builds or vehicle transfers after Sept 44, other than 4 Tiger I's from sPzAbt 511 on Jan 28th, 1945. From the photos I have, they all appear to have Zimmerit and would have features present on earlier production vehicles.