Simplify the following text for a Grade 5 native English-speaking person.
Original: During the early 2000s the plan was developed by Cross London Rail Links Ltd. , the developers of Crossrail , and the line is therefore sometimes known as Crossrail 2 and expected to be a large gauge tunnel .
Simplified: As of 2008 , the plan is being developed by Cross London Rail Links Ltd. who are the developers of Crossrail . It is therefore sometimes known as Crossrail 2 .