I have heard there is new medication just out to treat breathlessness and wheezing, can you confirm what this is please.?

Dyspnea and wheezing: Your condition most likely is bronchial asthma and from description you are already taking "puffers" New medications for this condition are introduced regularly. My suggestion is to review your current treatment and symptoms, check your basic tests for lung function and if necessary suggest to use additional medications if you need. New drugs are not for everyone but for a specific indications.