Over on the official T-Mobile UK forums the good news is that finally Samsung Galaxy Portal owners will be able to get the 2.1 Eclair update from September so just next month!.
This has been a question bugging users of the Portal on T-Mobile for months now but Stefen from T-Mobile Support Forums has now confirmed a September launch
Here is a quote from the post
We will be releasing a software update for the Samsung Galaxy Portal within the next month. This will update your Samsung Galaxy Portal to Android 2.1.
Link: T-Mobile UK Support Forums