What is Landrush period?

A Landrush period is a special period during which registration for a new TLD that has not yet launched is available either to a special group or at a special (usually premium) price. The Landrush period typically takes place after the Sunrise period. Following Landrush period is typically either a Early Access Period or General Availability for the new TLD.

Can I register domains through Dynadot during a new TLD's Landrush period?

What are the launch phases of a new TLD?