I'd previously posted updates to SpaceX activities at SLC-4 under the General and Heavy sections where they seem to get buried rather quickly, hence the new standalone topic.
A trip around SLC-4 yesterday shows some visible progress being made since earlier this summer. The transporter/erector is back outside near the launch stand for the first time in months, but not attached to the pad.
New large white painted structures are mounted to the left the launch stand, but the hold downs are still not yet installed after their removal late last year.
The biggest news is that heavy equipment is now positioned at SLC-4W, the abandoned Titan-2 launch pad, and demolition of that structure is beginning. This in preparation for leveling the site for landings and is another confirmation of revelations made back in April.