While they are not original T keyboards, they are supposed to match more recent T layouts. At some point, they had bluetooth and USB variants (I've got 5-ish of them around the house, I love the trackpoint for HTPC use), but this seems to be a newer iteration of those.
Yes, but they really shouldn't have touched the original design; it was just right. I haven't seen those later models in person, but when I worked as a consultant 16 years ago in Oslo, we had 2 guys in my company that lugged that original ThinkPad keyboard around to every assignment they got.
They always had silly, hard-to-search-for names (it seems the variants I have are called "Thinkpad Compact USB Keyboard with Trackpoint" and "Thinkpad Compact Bluetooth Keyboard with Trackpoint"): https://support.lenovo.com/nl/en/solutions/pd026745, https://support.lenovo.com/de/en/solutions/pd026744
While they are not original T keyboards, they are supposed to match more recent T layouts. At some point, they had bluetooth and USB variants (I've got 5-ish of them around the house, I love the trackpoint for HTPC use), but this seems to be a newer iteration of those.