Trust but verify. You should always request green samples for approval. And most of the reputable bean suppliers, when asked, will let you know if beans you are interested are current or past crop. But you need to cup them and decide if you like the coffee. Freshness by itself does not indicate quality; one of the espresso used in this year's US Barista Championship is a single estate past crop El Salvadorian.
Also you can check on the harvest season for each country, for example most Central American coffee earliest harvest might be Oct/Nov but better coffees from higher altitude may not be harvested until the new year. By the time it gets to you, could be say March or April or a few months later.
You can be sure if you have a high altitude central coffee in say December it is almost certainly from the previous year. This is not to say it isn't good, and much depends on storage conditions, but the coffee may have had more snap 6 months earlier.