Information about the 5th generation Archos portable media players has been leaked in France.

Update:
Archos 605 Wifi officially announced

The leaked details are still very few and do not allow for a complete picture of the capabilities of the new generation of Archos PMPs.
Archos had a spec page briefly on their site and French site GenerationMP3 of course saw it and published a screen shot. They since removed it by request of Archos. Why some companies still do not get a staging server for their website is a mystery to me.
The information from that leakage includes: The Archos 405 would come in 30GB, 80GB and 160GB versions and sport miniSD/microSD card slots.

Additionally About-electronics quotes some information about the new Archos PMPs that leaked on French discussion forum JBMM.fr: the Archos 605 will have Wi-Fi, a touch screen and 40GB HDD, 4GB flash drive and a 4.2 inch display with 800x480px.
The Archos 105 and 405 would sport 2GB of flash memory. The 105 would have a 1.8 inch display and the 405 a 3.5 inch display.