Sony PSP-4000 Mentioned In Magazine Ad

We previously told you of the PSP-4000 rumors, especially the one that it might reinstate the UMD drive. Now it seems that an advertisement on a magazine in the UK for a PSP accessory has mentioned the PSP-4000. When listing out the supported devices, you can clearly see a PSP-4000 in the list. Are you looking forward to have a UMD drive back on the PSP, or are you satisfied with your PSP-Go?