This post will certainly not be commenting pre-orders but I believe it is important to know that they are offered and it is suspected more offers of this kind soon start to see the day.
You can already pre-order domain names such as:
- city.boston or mayor.dallas
- voiture.sale ("dirty" in French :-)
- campnou.futbol ("football" in Spanish)
They offer pre-registrations:
- Unitedomains: http://www.uniteddomains.com
- Quintaris (Pool): http://quintaris.pool.com