In response to Stretch: 

Thanks for your interest in the new 5T. We have put a lot of love into this fine speaker and are very proud of the result.

Despite the difference in the photos, the ports actually have the same internal diameter (50mm). However, the 533-T port has more "flair" than the new 5T - so it looks a little larger.

Also, it looks like we made a typo when entering the -6dB down point for the 5T on the website. It should read 45Hz. Thanks for bringing this to our attention.

Although the pictures do look different, the finish will be an exact match between the new Intimus 5T and the 533-T.