I can't figure out what the "new numbers" means in the picture. If this picture doesn't provide enough context to specify the meaning, please tell me possible answers.
It is quite common in restaurants that every item on the menu has a number assigned to it that you can use to order. This can be done for multiple reasons:
- The names of the meals may be hard to pronounce for the patrons (e.g. in my country, this is common in Asian restaurants),
- The restaurant caters to tourists or is otherwise frequented by foreigners who may not speak the local language very well, or
- The restaurant is operated by foreigners who may not speak the local language very well.
In all of these cases, the use of numbers instead of names of the meals makes it easier for patrons and servers to understand each other. Most people can speak and understand basic numbers in many languages but would not be able to correctly pronounce and/or understand the names of the meals.
If you go to such a restaurant often and you have a favorite meal that you always order, you might have memorized the number and might not look into the menu before ordering.
What this sign is saying is that the menu has changed and you should therefore check whether your favorite meal still has the same number as before.
Many fast-food outlets and restaurants give numbers as well as names to dishes and meals to make ordering easier. For example, using the menu below, if I wanted Beef with Green Pepper in Black Bean Sauce on Hot Stone Plate I could save everybody's time by just saying "A number 32 please". If it was a favourite dish of mine, I might memorise the number. Such a scheme is helpful if there is a potential language barrier, also if rapid service in important.
It seems that the restaurant which placed the sign had revised its menu, and, as well as adding new dishes, had changed the numbering scheme so that customers needed to check if their favourite dishes had new numbers.