Invest's eye-like feature is very noticeable only in the water vapor images, as the system is quite moist in the mid to upper levels, but lacking any deep convection over the center of circulation. At the surface, the cyclonic flow is still a fair bit displaced from the mid-upper level low. Something to watch for overnight that may now be getting underway - deep convection firing up within the very mean center of circulation, and thus transition from cold core to warm core would then likely be starting. For now, it is still more characteristic of a cold-cored occluded low with gale-force winds closer to the baroclinic kick, than anywhere else.

Adding the most recent Herbert-Poteat analysis from SSD
DATE/TIME LAT LON CLASSIFICATION STORM
29/0545 UTC 26.2N 38.6W ST2.5/2.5 95L -- Atlantic Ocean